Two-part stacking chair

Abstract

A two-piece chair frame assembly comprises a back piece and a front piece joined together to form a chair frame. The back and front pieces are separate and discrete pieces until joined together. The back piece comprises a pair of rear legs, a backrest frame, and a back seat frame portion. The front piece comprises a pair of front legs and a front seat frame portion. The front and back seat frame portions join together to form a seat frame. The back and front pieces have different surface characteristics.

What is claimed is: 
     
       1. A two-piece chair frame assembly device, comprising:
 a) a back piece and a front piece joined together to form a chair frame, the back and front pieces being separate and discrete pieces until joined together; 
 b) the back piece comprising a pair of rear legs, a backrest frame, and a back seat frame portion; 
 c) the front piece comprising a pair of front legs and a front seat frame portion; 
 d) the front and back seat frame portions joining together to form a seat frame; 
 e) the back seat frame portion comprising:
 i) a rear spar extending between the pair of rear legs; and 
 ii) an attachment insert extending forwardly from a proximal end at the rear spar to a distal free end; and 
 
 f) the front seat frame portion comprising:
 i) a front spar extending between the pair of front legs; 
 ii) a pair of side spars extending rearwardly from the pair of front legs to distal free ends; 
 iii) a distal flange extending laterally between the distal free ends of the pair of side spars; and 
 iv) an intermediate flange at an intermediate point of the pair of side spars; 
 
 g) the back and front seat frame portions joining together with the attachment insert inserted between the pair of side spars of the front seat frame portion, and with:
 i) the distal free end of the attachment insert of the back seat frame portion being affixed to the intermediate flange of the front seat frame portion so that the attachment insert of the back seat frame portion is attached to the pair of side spars of the front seat frame portion at the intermediate portion of the pair of side spars; and 
 ii) the proximal end of the attachment insert of the back seat frame portion being affixed to the distal flange of the front seat frame portion so that the attachment insert of the back seat frame portion is attached to the pair of side spars of the front seat frame portion at the distal ends of the pair of side spars. 
 
 
     
     
       2. The device in accordance with  claim 1 , wherein the back and front pieces have different surface characteristics, comprising at least one of:
 a) a color of the pair of front legs being different than a color of the pair of rear legs or the backrest frame; 
 b a surface finish of the pair of front legs being different than a surface finish of the pair of rear legs or the backrest frame; or 
 c) combinations thereof. 
 
     
     
       3. The device in accordance with  claim 1 , wherein an entire surface of the pair of front legs, the front spar, and the pair of side spars of the front piece has a first surface characteristic, and an entire surface of the pair of rear legs, the rear spar and the backrest frame of the back piece has a second surface characteristic different from the first surface characteristic. 
     
     
       4. The device in accordance with  claim 1 , further comprising:
 a seat disposed on and secured to the seat frame; and 
 the attachment insert of the back seat frame portion being sandwiched between the seat and the distal flange and the intermediate flange of the front seat frame portion. 
 
     
     
       5. The device in accordance with  claim 1 , further comprising:
 a seat cushion disposable on and secured to the seat frame; and 
 a backrest cushion secured to and carried by the backrest frame. 
 
     
     
       6. The device in accordance with  claim 1 , wherein the attachment insert is recessed inwardly with respect to the pair of rear legs; wherein the pair of side spars taper inwardly and rearwardly from the pair of front legs to the rear spar; and wherein the chair frame is a chair frame of a first chair stackable on top of a chair frame of a second chair identical in structure to the first chair and with a pair of side spars of the chair frame of the second chair received within the rear legs of the chair frame of the first chair. 
     
     
       7. The device in accordance with  claim 1 , wherein the back and front pieces are removably joined together. 
     
     
       8. A method for assembling the device in accordance with  claim 1 , comprising:
 inserting the attachment insert of the back seat frame portion between the pair of side spars of the front seat frame portion; 
 attaching the attachment insert of the back seat frame portion to the distal flange and the intermediate flange of the front seat frame portion forming the seat frame; and 
 attaching a seat to the seat frame with the attachment insert between the seat and the distal flange and the intermediate flange of the front seat frame portion. 
 
     
     
       9. A method for assembling the device in accordance with  claim 1 , comprising:
 selecting the back piece with a desired first surface characteristic from a group of back frame pieces with difference surface characteristics; 
 selecting the front piece with a desired second surface characteristic from a group of front frame pieces with difference surface characteristics; and 
 joining the back piece to the front piece to form the chair frame. 
 
     
     
       10. A two-piece chair frame assembly device, comprising:
 a) a back piece and a front piece joined together to form a chair frame, the back and front pieces being separate and discrete pieces until joined together; 
 b) the back piece comprising a pair of rear legs, a backrest frame, a back seat frame portion, and an attachment insert extending forwardly from a proximal end at the hack seat frame portion to a distal free end; 
 c) the front piece comprising a pair of front legs, a front seat frame portion, and a pair of side spars extending rearwardly from the pair of front legs to distal free ends; 
 d) the front and back seat frame portions joining together to form a seat frame with the attachment insert inserted between the pair of side spars; and 
 e) wherein the attachment insert is recessed inwardly with respect to the pair of rear legs; wherein the pair of side spars taper inwardly and rearwardly from the pair of front legs to the back seat frame portion; and wherein the chair frame is a chair frame of a first chair stackable on top of a chair frame of a second chair identical in structure to the first chair and with a pair of side spars of the chair frame of the second chair received within the rear legs of the first chair. 
 
     
     
       11. The device in accordance with  claim 10 , wherein an entire surface of the front piece has a first surface characteristic, and an entire surface of the back piece has a second surface characteristic different from the first surface characteristic. 
     
     
       12. The device in accordance with  claim 10 , further comprising:
 a seat disposed on and secured to the seat frame; and 
 a distal flange extending laterally between the distal free ends of the pair of side spars; 
 an intermediate flange at an intermediate point of the pair of side spars; and 
 the attachment insert of the back seat frame portion being sandwiched between the seat and the distal flange and the intermediate flange of the front seat frame portion. 
 
     
     
       13. The device in accordance with  claim 10 , wherein the back and front pieces have different surface characteristics comprising at least one of:
 a) a color of the pair of front legs being different than a color of the pair of rear legs or the backrest frame; 
 b) a surface finish of the pair of front legs being different than a surface finish of the pair of rear legs or the backrest frame; or 
 c) or combinations thereof. 
 
     
     
       14. The device in accordance with  claim 10 , further comprising:
 a) the front seat frame portion comprising:
 i) a distal flange extending laterally between the distal free ends of the pair of side spars; and 
 ii) an intermediate flange at an intermediate point of the pair of side spars; and 
 
 b the back and front seat frame portions joining together with:
 i) the distal free end of the attachment insert of the back seat frame portion being affixed to the intermediate flange of the front seat frame portion; and 
 ii) the proximal end of the attachment insert of the back seat frame portion being affixed to the distal flange of the front seat frame portion. 
 
 
     
     
       15. The device in accordance with  claim 10 , wherein the pair of front leg and the pair of back legs has the different surface characteristics therebetween. 
     
     
       16. The device in accordance with  claim 10 , wherein the back and front pieces are removably joined together. 
     
     
       17. The device in accordance with  claim 10 , wherein the back seat frame portion comprises the insert insertable into a recess of the front seat frame portion. 
     
     
       18. A two-piece chair frame assembly device, comprising:
 a) a back piece and a front piece removably joined together to form a chair frame, the back and front pieces being separate and discrete pieces until joined together; 
 b) the back piece comprising a pair of rear legs, a backrest frame, and a back seat frame portion; 
 c) the front piece comprising a pair of front legs, a front seat frame portion, a pair of side spars extending rearwardly from the pair of front legs to distal free ends, a distal flange extending laterally between the distal free ends of the pair of side spars, and an intermediate flange at an intermediate point of the pair of side spars; 
 d) the front and back seat frame portions joining together to form a seat frame; and 
 e) the back seat frame portion comprises an attachment insert insertable into a recess of the front seat frame portion with a distal free end of the attachment insert being affixed to the intermediate flange so that the attachment insert of the back seat frame portion is attached to the pair of side spars of the front seat frame portion at the intermediate portion of the pair of side spars, and with a proximal end of the attachment insert being affixed to the distal flange so that the attachment insert of the back seat frame portion is attached to the pair of side spars of the front seat frame portion at the distal ends of the pair of side spars. 
 
     
     
       19. The device in accordance with  claim 18 , wherein an entire surface of the front piece has a first surface characteristic, and an entire surface of the back piece has a second surface characteristic different from the first surface characteristic. 
     
     
       20. The device in accordance with  claim 18 , wherein the attachment insert is recessed inwardly with respect to the pair of rear legs; wherein the pair of side spars taper inwardly and rearwardly from the pair of front legs to the back seat frame portion; and wherein the chair frame is a chair frame of a first chair stackable on top of a chair frame of a second chair identical in structure to the first chair and with a pair of side spars of the chair frame of the second chair received within the rear legs of the chair frame of the first chair.